1.首先看下效果图：

2.ext代码
复制代码 代码如下:
/// <reference path="http://www.cnblogs.com/Resources/ExtJs/vswd-ext_2.0.2.js" />
Ext.namespace('XQH.ExtJs.Frame');
XQH.ExtJs.Frame.RoleManage = function() {
this.init();
};
Ext.extend(XQH.ExtJs.Frame.RoleManage, Ext.util.Observable, {
init: function() {
//表单
addForm = new Ext.form.FormPanel({
id: 'addRoleForm',
width: 460,
height: 250,
//样式
bodyStyle: 'margin:5px 5px 5px 5px',
frame: true,
xtype: 'filedset',
labelWidth: 60,
items:
[
{
xtype: 'fieldset',
title: '角色信息',
collapsible: true,
autoHeight: true,
autoWidth: true,
items:
[
{
xtype: 'textfield',
name: 'RoleName',
fieldLabel: '角色名称',
emptyText: '必填',
blankText: '角色名称不能为空',
allowBlank: false,
maxLength: 10,
maxLengthText: '角色不能超过10个字符',
anchor: '98%'
}
]
},
{
xtype: 'fieldset',
title: '角色说明',
collapsible: true,
autoHeight: true,
autoWidth: true,
items:
[
{ html: '这是说明信息...' }
]
}
],
reader: new Ext.data.JsonReader({
root: 'data',
fields: [
{ name: 'RoleId', mapping: 'RoleId', type: 'int' },
{ name: 'RoleName', mapping: 'RoleName', type: 'string' }
]
})
});
//新增用户窗口
addWin = new Ext.Window({
id: 'addRoleWin',
title: '新增角色',
width: 480,
height: 210,
//背景遮罩
modal: true,
//重置大小
resizable: false,
//当关闭按钮被点击时执行的动作
closeAction: 'hide',
plain: true,
buttonAlign: 'center',
items:addForm,
buttons:
[
{ text: '关闭', handler: function() { Ext.getCmp('addRoleWin').hide(); } },
{ text: '提交', id: 'btnSubmit' }
]
});
//添加角色事件
function addRoleFunction() {
var submitButton = this;
submitButton.disable();
var userForm = Ext.getCmp("addRoleForm");
if (userForm.form.isValid()) {
userForm.form.doAction('submit', {
url: "http://www.cnblogs.com/Service/SystemService/RoleService.ashx?Method=AddRole",
method: 'post',
waitTitle: "请稍候",
waitMsg: '正在添加数据...',
success: function(form, action) {
submitButton.enable();
Ext.getCmp('roleGD').store.reload();
userForm.ownerCt.hide();
},
failure: function(form, action) {
var tip = "新增失败!";
if (action.result.rspText != "")
tip = action.result.rspText;
Ext.Msg.alert('提示', tip);
submitButton.enable();
}
});
}
else {
submitButton.enable();
}
};
//添加按钮单击事件
function btnAddClick() {
Ext.getCmp('addRoleForm').form.reset();
Ext.getCmp("addRoleWin").setTitle('新增角色');
Ext.getCmp("addRoleWin").buttons[1].handler = addRoleFunction;
Ext.getCmp("addRoleWin").show();
};
//修改角色事件
function updateRoleFunction() {
var submitButton = this;
submitButton.disable();
var userForm = Ext.getCmp("addRoleForm");
var id = userForm.form.reader.jsonData.data[0].RoleId;
if (userForm.form.isValid()) {
userForm.form.doAction('submit', {
url: 'http://www.cnblogs.com/Service/SystemService/RoleService.ashx?Method=UpdateRoleById&RoleId=' + id,
method: 'post',
//params:{},
waitTitle: "请稍候",
waitMsg: '正在保存数据...',
success: function(form, action) {
submitButton.enable();
Ext.getCmp('roleGD').store.reload();
userForm.ownerCt.hide();
},
failure: function(form, action) {
var tip = "编辑活动保存失败！";
if (action.result.text != "" & action.result.text != null)
tip = action.result.text;
Ext.Msg.alert('提示', tip);
submitButton.enable();
}
});
}
else {
submitButton.enable();
}
};
//修改按钮单击事件
function btnUpdateClick() {
var grid = Ext.getCmp('roleGD');
if (grid.getSelectionModel().getSelections()[0] == undefined) {
Ext.Msg.alert("提示", "请选中要修改的行");
}
else {
Ext.getCmp('addRoleWin').setTitle('修改角色');
Ext.getCmp("btnSubmit").handler = updateRoleFunction;
Ext.getCmp("addRoleForm").form.reset();
var roleId = grid.getSelectionModel().getSelections()[0].data.RoleId;
var url = 'http://www.cnblogs.com/Service/SystemService/RoleService.ashx?Method=GetRoleById&roleId=' + roleId;
Ext.getCmp("addRoleWin").show();
Ext.getCmp("addRoleForm").load({
url: url,
waitTitle: "请稍候",
waitMsg: '正在加载数据...',
success: function(form, action) {
},
failure: function(form, action) {
var tip = "提交失败";
if (action.response.responseText != "")
tip = action.response.responseText;
Ext.Msg.alert('提示', tip);
}
});
}
};
//删除角色函数
function delRoleFunction() {
var grid = Ext.getCmp('roleGD');
if (grid.getSelectionModel().getSelections()[0] == undefined) {
Ext.Msg.alert("提示", "请选中要删除的角色");
}
else {
Ext.MessageBox.confirm('提示', '确实要删除所选的角色吗？', function(btn) {
if (btn == 'yes') {
var conn = new Ext.data.Connection();
conn.request
({
url: 'http://www.cnblogs.com/Service/SystemService/RoleService.ashx?Method=DeleteRoleById',
params: { Id: grid.getSelectionModel().getSelections()[0].data.RoleId },
method: 'post',
scope: this,
callback: function(options, success, response) {
if (success) {
Ext.getCmp('roleGD').store.reload();
}
else {
Ext.MessageBox.alert("提示", "删除失败！");
}
}
});
}
});
}
};
//工具栏
toolBar = new Ext.Toolbar({
items:
[
{ text: '新增', id: 'btnAdd' },
'-',
{ text: '修改', id: 'btnUpdate' },
'-',
{ text: '删除', handler:delRoleFunction }
]
});
//新增按钮
var addUserBtn = Ext.getCmp('btnAdd');
addUserBtn.on('click', btnAddClick);
//修改按钮
var btnUpdate = Ext.getCmp('btnUpdate');
btnUpdate.on('click', btnUpdateClick);
var dataStore = new Ext.data.Store({
proxy: new Ext.data.HttpProxy({
url: 'http://www.cnblogs.com/Service/SystemService/RoleService.ashx?Method=GetAllRoles'
}),
reader: new Ext.data.JsonReader({
root: 'Table',
totalProperty: 'RecordCount',
id: 'RoleId',
fields: ['RoleId', 'RoleName']
})
});
dataStore.load({ params: { start: 0, limit: 20} });
//grid
var roleGrid = new Ext.grid.GridPanel({
region: 'center',
id: 'roleGD',
title: '角色管理',
store: dataStore,
columns:
[
new Ext.grid.RowNumberer({ header: "编号", width: 50 }),
{ header: "RoleId", width: 50, sortable: false, dataIndex: 'RoleId', hidden: true },
{ header: "角色名称", width: 50, sortable: true, dataIndex: 'RoleName' }
],
loadMask: { msg: "加载中..." },
stripeRows: true,
viewConfig: {
forceFit: true
},
sm: new Ext.grid.RowSelectionModel({ singleSelect: true }),
bbar: new Ext.PagingToolbar({
pageSize: 20,
store: dataStore,
displayInfo: true,
displayMsg: "显示第 {0} 条到 {1} 条记录，一共 {2} 条",
emptyMsg: "没有记录"
}),
tbar: toolBar
});
//布局
var roleView = new Ext.Panel({
renderTo: 'roleMain',
height: 550,
layout: 'border',
border: false,
items: [roleGrid]
});
},
destroy: function() {
}
});

3.linq代码
复制代码 代码如下:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace XQH.ExtJs.LinqDatabase
{
public class RoleLinqAccess
{
LinqDatabaseDataContext db = new LinqDatabaseDataContext();
/// <summary>
/// 获取所有角色
/// </summary>
/// <param name="start"></param>
/// <param name="limit"></param>
/// <param name="total"></param>
/// <returns></returns>
public List<XRole> GetAllRole(int start,int limit,out int total)
{
var q = from r in db.XRole
select r;
total = q.Count();
if (limit == 0)
{
return q.ToList();
}
else
{
return q.Skip(start).Take(limit).ToList();
}
}
/// <summary>
/// 根据ID获取角色
/// </summary>
/// <param name="id"></param>
/// <returns></returns>
public XRole GetRoleById(int id)
{
var q = from r in db.XRole
where r.RoleId == id
select r;
return q.First();
}
/// <summary>
/// 新增角色
/// </summary>
/// <param name="role"></param>
/// <returns></returns>
public List<XRole> AddRole(XRole role)
{
db.XRole.InsertOnSubmit(role);
db.SubmitChanges();
return db.XRole.ToList();
}
/// <summary>
/// 根据ID删除角色
/// </summary>
/// <param name="id"></param>
/// <returns></returns>
public List<XRole> DelRoleById(int id)
{
var q = from r in db.XRole
where r.RoleId == id
select r;
db.XRole.DeleteAllOnSubmit(q);
db.SubmitChanges();
return db.XRole.ToList();
}
/// <summary>
/// 更新角色
/// </summary>
/// <param name="role"></param>
/// <returns></returns>
public List<XRole> UpdateRole(XRole role)
{
var q = from r in db.XRole
where r.RoleId == role.RoleId
select r;
foreach (XRole r in q)
{
r.RoleId = role.RoleId;
r.RoleName = role.RoleName;
}
db.SubmitChanges();
return db.XRole.ToList();
}
}
}

4.ashx代码
复制代码 代码如下:
/// <summary>
/// 获取全部角色
/// </summary>
public void GetAllRoles()
{
StringBuilder jsonData = new StringBuilder();
int start = Convert.ToInt32(Request["start"]);
int limit = Convert.ToInt32(Request["limit"]);
int total = 0;
List<XRole> lsRole = roleAccess.GetAllRole(start, limit, out total);
JsonConvert<XRole> json = new JsonConvert<XRole>();
jsonData = json.ToGridPanel(lsRole, total);
Response.Write(jsonData);
Response.End();
}
/// <summary>
/// 根据ID获取角色
/// </summary>
/// <param name="id"></param>
/// <returns></returns>
public void GetRoleById()
{
StringBuilder jsonData = new StringBuilder();
bool success = false;
string rspText = string.Empty;
string id = Request["RoleId"].ToString();
try
{
XRole role = roleAccess.GetRoleById(Convert.ToInt32(id));
success = true;
rspText = "success";
JsonConvert<XRole> json = new JsonConvert<XRole>();
jsonData = json.ToFormPanel(success, rspText, role);
}
catch (Exception ex)
{
success = false;
rspText = ex.Message;
}
Response.Write(jsonData);
Response.End();
}
/// <summary>
/// 新增角色
/// </summary>
public void AddRole()
{
string jsonStr = string.Empty;
bool success = false;
string rspText = string.Empty;
string roleName = Request["RoleName"].ToString();
XRole role = new XRole();
role.RoleName = roleName;
try
{
roleAccess.AddRole(role);
success = true;
rspText = "新增成功!";
}
catch (Exception ex)
{
success = false;
rspText = ex.Message;
}
jsonStr = "{success:" + success.ToString().ToLower() + ",message:'" + rspText + "!'}";
Response.Write(jsonStr);
Response.End();
}
/// <summary>
/// 根据角色编号修改角色
/// </summary>
public void UpdateRoleById()
{
string jsonStr = string.Empty;
bool success = false;
string rspText = string.Empty;
string RoleId = Request["RoleId"].ToString();
string RoleName = Request["RoleName"].ToString();
XRole role = new XRole();
role.RoleId = Convert.ToInt32(RoleId);
role.RoleName = RoleName;
try
{
roleAccess.UpdateRole(role);
success = true;
rspText = "修改成功!";
}
catch (Exception ex)
{
success = false;
rspText = ex.Message;
}
jsonStr = "{success:" + success.ToString().ToLower() + ",message:'" + rspText + "!'}";
Response.Write(jsonStr);
Response.End();
}
/// <summary>
/// 根据ID删除用户
/// </summary>
public void DeleteRoleById()
{
string jsonStr = string.Empty;
bool success = false;
string rspText = string.Empty;
try
{
int id = Convert.ToInt32(Request["Id"].ToString());
List<XRole> lsRole = roleAccess.DelRoleById(id);
success = true;
rspText = "success";
}
catch (Exception ex)
{
success = true;
rspText = ex.Message;
}
jsonStr = "{success:" + success.ToString().ToLower() + ",message:'" + rspText + "!'}";
Response.Write(jsonStr);
Response.End();
}